FVXX23 KNES 282258 VA ADVISORY DTG: 20210628/2258Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2021/611 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. GEOPHYSICAL INST. ERUPTION DETAILS: VA CLDS OBS IN STLT AND SUMMIT WEBCAM OBS VA DTG: 28/2220Z OBS VA CLD: SFC/FL200 S0158 W07820 - S0202 W07819 - S0215 W07838 - S0201 W07844 - S0158 W07820 MOV SW 10KT FCST VA CLD +6HR: 29/0430Z SFC/FL200 S0158 W07820 - S0202 W07819 - S0224 W07849 - S0205 W07857 - S0158 W07820 FCST VA CLD +12HR: 29/1030Z NO VA EXP FCST VA CLD +18HR: 29/1630Z NO VA EXP RMK: VA CLDS OBS IN SUMMIT WEBCAM AND STLT MOVG SW FM SUMMIT. LOW CONF WITH VA EXT DUE TO WX CLDS. VA HGT/DIR FM 2234Z VONA RPRT FM GI. NWP MLDS SHOWS CONT WSW-LY MOVMT THRU T+6. ...SAMBUCCI NXT ADVISORY: WILL BE ISSUED BY 20210629/0500Z